BACKGROUND:Grate Guy dresses up as a clown with loads of makeup and a bright pink costume. He also rolls around on a ball and likes blowing on the horn that he uses for his act.
Grate Guy and Knife Guy are partners in a travelling entertainers' act. Grate Guy is generally given credit for being the more intelligent of the two, and he has impressive magic skills. On the other hand, he doesn't have the fast reflexes of his partner.
The two Guys' wandering days came to an end when they met Booster. He now employs them full-time at his Tower, where they keep him entertained, and act as makeshift bodyguards.